Glass shaping mechanism



May 9, 1933. K. E. Pl-:ILER 1,907,570

, GLASS SHAPING MECHANISM Original Filed Nov. l5, 1928 [n den tor 70 l72573 ny P www Patented May 9, 1933 UNITED STATES KARL E. PEHIER, OF WESTHARTFORD, CONNECTICUT,

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GLASS SHAPING MECEANISR Original application led November 15, 1928,Serial No. 319,462. Divided and this application led February 19, 1930.

My invention relates to the art of separating mold charges of moltenglass from 4a supply in a tank or pool by means of molds or feeding cupsthat are brought into contact with the surface of the glass andarecharged with glass by suction produced in the molds or cups.

The general object of my invention is to provide improved means forsevering the glass in the charged molds or cups from the glass in thesupply body.

More specically, the objects of my invention are to provide an improvedsevering device for use in apparatus of the above-ind!- cated character,including a shear blade which may cooperate with a plurality of molds orcups brought successively to the charging position, and which, in suchan ar rangement, is arranged to properly cooperate with molds or cupshaving their bottoms at diierent heights, thereby enabling theproduction of articles of diierent heights on the same machine; and toprovide such a shearing mechanism wherein the shear blade is pressedyieldingly against the bottoms of the molds or cups and is removed fromthe hot severing position above the gathering pool in the intervalsbetween the severing operations. lt is preferred that the shear blade inthis arrangement be made to approach each mold or cup by a rising motionto bring the blade into contact with the bottom of the mold or cup. andthat the blade be then maintained yieldingly against the bottom of themold or cup during the severing operation.

The severing mechanism herein shown and described constitutes animprovement over the ordinary shearing mechanism, such as is employed,for example, in the well-known Owens bottl'e machine, wherein eachgathering mold of the machine is provided with its individual knifewhich slides across and in contact with the lower surface of the mold.or in contact with a shear bushing carried by the mold, without anymeans for yieldingly pressing the knife into proper sliding contact withthe mold.

The arrangements for causing the shear blade to cooperate with molds orgathering cups having their bottoms at did'erent levels Serial No.429,572.

permits different lengths of suction molds to beused on the same bottlemachine at the same time, while still permitting the upper ends of thebody portions of the different suction mold cavities to be brought to acommon level. It is extremely desirable in a bottle machine of thistype, to have the'parting line or joint between the bottom of thevarious neck mold cavities and the respective upper ends of thecooperating suction mold cavities, to be in substantially the sameplane. This permits various mold operations, as well as the subsequenthandling of the ware, to be made with less difficulty. Therefore, inorder to make, at the same time, articles of different height, itmay behighly desirable, in order to meet the above conditions, to have theparison mold bottoms or lower ends, at different heights. It is one ofthe objects of the present invention to permit this with the use of oneshear blade cooperating with a plurality of such molds.

The embodiment of the invention as herein disclosed and claimed is oneof two embodiments of the invention disclosed in my co-pendingapplication, Serial No. 319,462, led Nov. 15, 1928, and this applicationis a division of the aforesaid' application.

lin the following description my invention 'will be described mainlyinconnection with suction-ted molds. lt will be understood that thisdescription applies equally well to feeding cups that are charged bysuction and thereafter empty their charges into molds, and that myinvention includes both of these kinds of apparatus.

In the accompanying drawing,

Figure 1 is a plan of a portion of a system of glass working apparatusequippedwith an embodiment of my invention; Y

Fig. 2 is a side view, partly in elevation and partly in verticalsection, of the apparatus shown in Fig. 1; and

Fig. 3 is a detail plan view of a part of the knife-shifting mechanismshown in Figs. 1 and 2.

The numeral 10 indicates a parison mold of the suction type adapted tobe lowered into Contact with a gathering pool of molten glass 11contained in a refractory receptacle 12 which may be a rotary tank orpot, such as is used with the Owens machine, or may be any othersuitable container for a supply of molten glass. The construction of themold and the arrangements for opening and closing the mold, forpresenting it to the gathering pool, and for producing suction in themold to ga'therthe glass, form no part of my present invention. The mold10, as shown is carried by a head 13 which may form part of a rotarybottle-making machine of the Owens type or may be associated with anyother suitable mechanism.

The glass severing mechanism with which my invention is concerned`consists of a shear blade 50 carried by a rocking arm 51, secured to theupper end of a rock shaft'52 which is mounted in vertical bearings 53carried by fixed brackets 54 that are mounted on a suitable support 55which may conveniently be a part of the stationary frame of theglassworking machine. In the particular arrangement shown, a portion ofa rotary element 56 of the machine is also shown, and this rotary part56 carries cam projections 57, one for each of the molds 10. These cams57 act to swing the shear blade 50 from its working position, shown infull lines in Fig. 1, to its idle position, shown in dot-and-dash lines.This swinging movement of the shear blade is accomplished by means of aspur gear 58 carried by the rock shaft 52, about midway between itsends, and meshing with a gear segment 59 upon one end of a lever 60which is pivoted at 61 to one of the brackets 54. The end of the lever60 opposite to the segment 59 carries a roller 62 that rides upon theedge surface 63 of the rotarypart 56 of the glass-working machine. Aspring 64 is connected between the outer end of the lever 60 and a fixedmember `65 and serves to hold the roller 62 in contact with the surface63. It will be apparent that as the member 56 rotates in the directionindicated by the arrow in Fig. 1, the cam member 57 will engage theroller 62, rock the arm 60 and, through the segment 59 and the gear 58,swing the shear blade 50 from the full-line position to the dot-and-dashline position shown in Fig. 1. Thereafter, when the cam 57 passes beyondthe roller 62, the spring 64 returns the parts to the working positionshown in Fig. 1. p

For the purpose of giving the shear blade 50 an upward spring pressurewhile it is in contact with the mold, a spring surrounds the rock shaft52 near its lower end between a collar 71 on the rock shaft and afloating collar 72 which rests upon rollers 73 carried by the arms ofthe forked end of a lever 74 that is pivoted at 75 to one of thebrackets 54 and is connected by means of a link 76 to a lever 77 pivotedat 78 and carrying at its outer end a roller 79 that normally runsagainst the under surface of the rotary member 56. A cam 80 is securedbeneath the table 56 in such relation to the roller 7 9 that,

as the member 56 rotates, the roller 79 will be `ingly a ainst thebottom of the mold while the mo d travels across the shear blade.Thereafter, when the cam 80 moves beyond the roller 79, the rock shaft52 and the blade 50 are vlowered to their full-line positions.

The yielding upward movement imparted to the shear blade enables theblade to cooperate with molds of diierent heights within considerablelimits.

The structurevshown and described herein may be variously modifiedwithin the scope of the appended claims.

I claim as my invention:

1. Mechanism for severing glass segregated into mold charges by suction,comprising a shear blade, means for rockmg said shear blade laterallybetween a position above a glass supply and a position removed from Saidglass supply, comprising a rock shaft carrying said shear blade, meansfor rocking said shaft periodically, automatic means for periodicallyraising and lowering said rock shaft and said shear blade, and ayielding connection between said rock shaft and said automatic means.

2. Glass fabricating apparatus comprisin a suction mold, means formoving said mol into and out of contact with a supply body of glass tocharge the mold by suction, glass severing mechanism stationarilymounted as a whole adjacent said supply body of glass, and comprising ashear blade, means for rocking said shear blade into and out of aposition above said supply body and in the path of movement of saidmold, means for periodically raising and lowering said shear blade intoand out of a position for severing the glass depending from said mold,and a yielding connection between said last-named means and saidsecond-named means affording vertical self-adjustment of said shearblade as a reult of the engagement of the mold therewit 3. Glass shapingapparatus including a suction mold, a supply body of molten glass, meansfor moving said mold into and out of contact with said glass to chargethe mold by suction, glass severing mechanism mounted independently ofsaid mold and stationary relative thereto, said mechanism including ashear blade, means for rocking said shear blade laterally into and outof a position above said body of glass, means operating in timedrelation to the movement of said mold for raising said shear blade intoa osition for engagement with said mold, an means for yieldingly holdingsaid shear blade stationary for severing engagement with said mold.

4. In combination, a glassware forming machine including a suction mold,a glass severing device statlonarily mounted with respect to said mold,and means for operating said device comprising a vertical rock shaftupon which the device is mounted, a yielding support for said rockshaft, and means driven by said machine for periodically oscillating andreciprocating said rock shaft.

5. In combination with a container for a pool of molten glass, areceptacle ada ted to gather charges of glass from the sur ace of saidpool, and glass severing mechanism for successively separating chargesfrom the glass in the pool, comprising a stationary frame, a verticalrotary shaft journaled in said frame and slidable therein, a shear bladecarried by said shaft, automatic means for oscillating said shaft toswing the shear blade laterally from a working sition over said pool toan idle cooling position laterally of said pool, automatic means forreciprocating said shaft and shear blade in timed relation to theoscillation thereof, and a yielding connection between the last-namedmeans and said shaft arran ed to' vafford self-adjustment of said shearlade as a result of the engagement of said blade with said mold.

Signed at Hartford, Connecticut, this 17th day of February, 1930.

KARL E. PEILER.

